Also see http://aragonitoazul.blogspot.com/2013/09/ix-feria-de-asociaciones-bembibre-leon.htmland http://www.foro-minerales.com/forum/viewtopic.php?t=7881and http://elmineraldigital.blogspot.com/2012/08/iii-mesa-de-intercambio-de-minerales-de.htmland http://www.mtiblog.com/2012/09/ferias-y-mesas-de-intercambio-para.html

Also see http://aragonitoazul.blogspot.com/2014/04/iv-mesa-de-intercambio-de.htmlhttp://www.foro-minerales.com/forum/viewtopic.php?t=9672http://aragonitoazul.blogspot.com/2014/01/natura-2013-minerales-fosiles-gemas.htmlhttp://www.mtiblog.com/2014/03/ferias-y-eventos-para-abril-2014.html

Also see:http://www.mtiblog.com/2015/04/ferias-y-eventos-para-abril-2015.htmlhttp://aragonitoazul.blogspot.nl/2015/03/v-mesa-de-intercambio-de-minerales.htmlhttp://www.foro-minerales.com/forum/viewtopic.php?p=115142#115142http://www.bocamina.es/smf/index.php?topic=315.0

Also see:http://www.mtiblog.com/2016/02/ferias-y-eventos-para-marzo-2016.htmlhttp://mineralesagus.blogspot.com/2016/03/sexta-mesa-de-intercambio-de-minearles.htmlhttp://gr-mulhacen.foroactivo.com/t1509-ferias-y-intercambios-marzo-2016http://www.foro-minerales.com/forum/viewtopic.php?t=11932

Also see:http://www.foro-minerales.com/forum/viewtopic.php?t=13227https://aragonitoazul.blogspot.com/2018/03/viii-mesa-de-intercambio-de-minerales.htmlhttp://www.mtiblog.com/2018/03/ferias-y-eventos-para-marzo-2018.html